I added a 12v 10 rpm geared motor to drive the water wheel. I reversed the direction of h=the wheel and piped the water in ABOVE the wheel. More power than the mill would get with the wheel just dipping in a moving stream.

An inside view of the motor installation to drive the water wheel. Still plenty of interior for inside detail visible through the open front door.

Another finished picture showing inside details, lots of figures and an outdoor overhead light for ight operations. Motor is turned on and off by a push/pull wire that peeks out of the right hand upstairs window.

My finger actuating the switch to turn on the motor and turn the water wheel.